Often, one will see two outboard motors with the same rated horsepower
yet one may have 25% greater engine displacement (i.e. 68cc vs. 85cc)
yet both will be rated 2.5 hp.

(1) How does the smaller displacement motor achieve the same
horsepower rating as the one with a greater displacement?

(2) What's the bottom line advantage, if any, to the outboard that has
the same horsepower rating yet has a greater cc displacement?

Sorry if these two questions seem rather elementary to some but I'm
new to the outboard motor scene and figure the only thing to do if
you're not certain of something is to ask the experts.

Thanx.

-Jay


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